SDI Technologies SDIO Card - Manual (Page 18)

©Copyright 2002-2006 SD Card Association
SDIO Card Bluetooth Type-A Simplified Specification Version 1.00
11
4.3 Adaptation to SDIO
4.3.1 Register Map
Table 3 shows the SDIO Card Type-A register map and Table 4 shows their descriptions. There is one
register for selecting card operational mode (not used in Type-A mode); three registers for interrupt
control and four registers for Read/Write control (counting Receiver Data and Transmitter Data as
separate registers).
Table 3 – SDIO Card Type-A for Bluetooth Register Map
Add RW
Register
Name
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
RO
Receiver
Data
RDAT
0x00
WO
Transmitter
Data
TDAT
0x10 WO
Read Packet
Control
0 0 0 0 0 0 0
PC
RRT
0x11 WO
Write Packet
Control
0 0 0 0 0 0 0
PC
WRT
RO
Retry Control
Status
0 0 0 0 0 0 0 RTC STAT
0x12
WO
Retry Control
Set
0 0 0 0 0 0 0 RTC SET
RO
Interrupt
Identification
0 0 0 0 0 0 0 INTRD
0x13
WO Interrupt Clear 0 0 0 0 0 0 0
CL
INTRD
0x14 RW
Interrupt
Enable
0 0 0 0 0 0 0
EN
INTRD
0x20 RO
Bluetooth
Mode Status
0 0 0 0 0 0 0 MD STAT
Table 4 – SDIO Card Type-A for Bluetooth Register Description
Field Type Description
RDAT RO
Access Window to Receive Data:
Any read from this address will pass data from the byte addressed by the read address pointer.
After any read from this register, the read address pointer will be automatically incremented by 1.
The Host shall not use CMD52 and shall use CMD53 for accessing RDAT (Address 0x00). When
the Host uses CMD52 for accessing RDAT, the Card will return 'OUT_OF_RANGE' error to the
Host in SD mode or 'PARAMETER ERROR' in SPI mode.
TDAT WO
Access Window to Transmit Data:
Any write to this address will pass data to the byte addressed by the write address pointer. After
any write to this register, the write address pointer will be automatically incremented by 1.
The Host shall not use CMD52 and shall use CMD53 for accessing TDAT (Address 0x00). When
the Host uses CMD52 for accessing TDAT, the Card will return 'OUT_OF_RANGE' error to the
Host in SD mode or 'PARAMETER ERROR' in SPI mode.
PCRRT WO Packet Read Retry: